What is "pond tortoise"

Pond \Pond\, n. [Probably originally, an inclosed body of water, and the same word as pound. See Pound an inclosure.] A body of water, naturally or artificially confined, and usually of less extent than a lake. ``Through pond or pool.''
--Milton.

Pond hen (Zo["o]l.), the American coot. See Coot (a) .

Pond lily (Bot.), the water lily. See under Water, and Illust. under Nymph[ae]a.

Pond snail (Zo["o]l.), any gastropod living in fresh-water ponds or lakes. The most common kinds are air-breathing snails (Pulmonifera) belonging to Limn[ae]a, Physa, Planorbis, and allied genera. The operculated species are pectinibranchs, belonging to Melantho, Valvata, and various other genera.

Pond spice (Bot.), an American shrub ( Tetranthera geniculata) of the Laurel family, with small oval leaves, and axillary clusters of little yellow flowers. The whole plant is spicy. It grows in ponds and swamps from Virginia to Florida.

Pond tortoise, Pond turtle (Zo["o]l.), any freshwater tortoise of the family Emydid[ae]. Numerous species are found in North America.